TDA8595 Datasheet, PDF (1/50 Pages) NXP Semiconductors – I2C-bus controlled 4 ´ 45 W power amplifier

TDA8595
I²C-bus controlled 4 × 45 W power amplifier
Rev. 02 — 21 November 2007
Product data sheet
1. General description
The TDA8595 is a complementary quad Bridge Tied Load (BTL) audio power amplifier
made in BCDMOS technology. It contains four independent amplifiers in BTL
configuration. Through the I²C-bus, diagnosis of temperature warning and clipping level is
fully programmable and the information available via two diagnostic pins is selectable. The
status of each amplifier (output offset, load or no load, short-circuit or speaker incorrectly
connected) can be read separately.
2. Features
2.1 General
I Operates in legacy mode (non I²C-bus) and I²C-bus mode (3.3 V and 5 V compliant)
I Three hardware-programmable I²C-bus addresses
I Drive 4 Ω or 2 Ω loads
I Speaker fault detection
I Independent short-circuit protection per channel
I Loss of ground and open V_P safe (with 150 mΩ series impedance and a supply
decoupling capacitor of 2200 µF maximum)
I All outputs short-circuit proof to ground, supply voltage and across the load
I All pins short-circuit proof to ground
I Temperature-controlled gain reduction to prevent audio holes at high junction
temperatures
I Low battery voltage detection
I Offset detection
I This part has been qualified in accordance with AEC-Q100
2.2 I²C-bus mode
I DC load detection: open-circuit, short-circuit and load present
I AC load (tweeter) detection
I During start-up, can detect which load is connected so the appropriate gain can be
selected without audio pop
I Independently selectable soft mute of front channels (channel 1 and channel 3) and
rear channels (channel 2 and channel 4)
I Programmable gain (26 dB and 16 dB) of front channels and rear channels
I Fully programmable diagnostic levels can be set:
N Programmable clip detection: 2 %, 5 % or 10 %
N Programmable thermal pre-warning